Miner&#39;s acetylene-lamp.



Y J. A. WESTER.

MINERS AGETYLENE LAMP.

` 'APPLICATION YILED MAR. Qfi, 19134 I 1,114,208, Patented oct. 2 0, 1914-.

- 2 SHEETS-SHEET 1.

I n J. A. WBSTER. MINER'S AGBTYLENB LAMP. APPL'IOATION- FILED MAR. Z4, 19213.k

Patented oen. 20.1914.

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. .7 2, niq@ or f` STAT-ES FATENT oFF-ICE.

Jesi-rn A. waeren., or weer ritannroar, ILLINOIS.

'Mineras non'rYnENn-LAMP.

. specification of Letters Patent. Patented Obi?. 20,1914.

Applloation illed Merch 2d, 1913. y Serial N0. 756,538.

To ail whom 'it may concern Be 1t known that I, JOSEPH A. Wns'rnn,

citizen of the United States, nresiding at West Frankfort, in the county of Franklin improvements in combined as generators and lamps, and the object or my invention y isfto rovide'a miners acetylene lamp which mayv4 e worn upon the cap of the miner in now commonly employed are worn.

A vstill further object 'of the invention 1s the'same manner in which the coal'oil lamps :Y toprovide ya lamp having two burners and two1 separate and independent generating chambers and means for supplying gas from each chamber to its burner.

`ii/Vith. these and-other objects inview, my

invention will be more fully described 4illustrated in 'the'accompanying drawings.V

and .then specifically pointed out .in the claims which are attached te and form a part of this application. l'

' .the drawings: Figure 1 is a central vertical `sectional view of my improved miners lamp showing the construction of the lamp and' also )the 'manner 1n which it is attached to a miners cap. Fig. I`2 is a the section on the line 2 2 of Fig-.1. Fig. 3 isa section on the line 3 3 of Fig. ,1. Fig. d is a fragmentary sectional view of one of the valves employed in my lamp. Fig. 5 is a fragmentary perspective view of a conventional form of miners cap showing the positioning of certain lamp. engaging and supporting plates.

f Corresponding and like parts'are referred to in the 'following description and `indi cated in all the views of the accompanying fdrawings by 'the same reference characters.

Thecombined lamp and generator proper includes a lower body portion-10 ,forming the carbid and gas generating chamber of the main generator 'and an upper body member 1l forming the water reservoir for the main generator and also including both the carbid chamber and water reservoir of supplemental generator., The body member 10 is formed of metal and is'preferably cylindrical in shape, being-closed. at its lower end by a bottom 12 and having a reduced upper end terminating in a threaded flange l'adapted for engagement within the downward] directed threaded iaiige 14 of the upper ody member 11, the flange 14 ofthe upper body memberbeing lare'd at its free edge, -as shown at 15, to clamp a packingring 16 between it andthe The upper body -portion 10, as clearly shown'in Fig. 2 of the drawings, is sulostan` :inclined upper wall ,portion of the lower member 10 and so form a gas-tight tially elliptical in horizontal section' and re- ,v

duced at its ylower end to merge into'thecylindrical flange or ring 14 to permit` engagement with the lower body section. The

body section 11 is closed at its lower end by a bottom 17 so positioned as to preferably be spaced from the upper edge of the flange 13 of the lower body section when the sections are united, and the upper body section is closed at itsupper erd by a top 18.

An inner casing 1:9 coacts with the walls of the upper bodysection 11 to form a sub` stantially cylindrical -inner compartment 20 located inv the' forward portion of the upper body memberand thefunction of which will Vbe vhereinafter explained. The re- 'mainder of the upper body section forms .the water reservoir of the main generator :while the entire lower body section forms the carbid and gas generating chamberof 'the main generator. A vertical cylindrical sleeve 2l extends by its upper end through the'bottom 17l of the upper'sectionll, being secured'A thereto and having its upper end internally beveled to provide a valve seat 22; A valve 23 normally engages in this `valve seat and is provided with a cylindrical portion extending through the sleeve and having' a squared part immediately below the sleeve which passes through a squared opening formed in the closed lower end of 'an outer perforated sleeve 21. The ter- "minal of this cylindrical portion is threaded to receive'a nut 24 by means of which the outer sleeve is clamped in place.

lThe portion 24 is provided throughout its entire length with a helical groove, thread or channel 26, the upper end of said -portion immediately adjacent the valve 23 being providedwith an encircling groove 26 from which a groove 2 6 leads at right angles to the maingroove 26.v This valve 23 is provided with a valve stem 27, the upper end of which is threaded through a thickened portion 28 of the top 18, being' Aprovided at its end with a milled head 29 by means of which an outer V*sleeve may be rotated to raise or lower the valve 23 from its seat 22. It will be apparent 'that when the valve is raised from its .seat the water contained in the mam chamber of the upper` body section will be uniformly fed to the carbid chamber or lower section and that this feeding of water will be uniform irrespective of any sudden shocks ,or jars rec-{ived by the lamp as all water passing from onev section to theother must flow through .the helical groove 26. lt will furi ther be apparent; that the rotary and up- 19 to form the chamber 20 are internally threaded at their upper portions to engage the threaded Wall 32 of a substantially cylindrical water reservoir indicated as a whole by thel numeral 33 and including the main body 32, the funnel-shaped bottom 3ft and top 35, the latter being provided with a laterally directed encircling flange 3G which seats upon the top of the upper body section when the reservoir 'is in place, and with u' wardl directed s aced ears 3G adapted.

i) Y P for engagement by a screw driver or other implement and providing means for rotat- The bottom' 34.- of this supplemental water reservoir is provided y with a valve seat 37, a valve sleeve 38 corresponding to the valve sleeve 21 and a valve 39 identical in construction with the valve 23 and 'having an extended portion threaded to correspond to the extended p0rtion of the former valve, this extended portion projecting through the sleeve and be! ing secured in-tlie closed end of an outer sleeve 38 corresponding tothe outer sleeve 2l. The valve stein All of this valve is threaded through the top mental reservoir and terminates in a milled head 42. The to o Lne resorvoiris pro` vided with a etilting openinga normally closed by a s vew cap 44.

Extendingr laterally from the forward portion 'of the upper body section is a casing 45 substantially elliptical in shape and divided centrallyiat its forward end` by a partition wall to forming tubular extensions the upper of which communicates through the rear portion of the casing 45 with theAv supplemental generating chamber'. A v ertical partition wall cuts off communication of the supple/1# between .the lower tubular extension and said chamber. Theinner end of the casing 45 is ached with mineral wool or other suitable fi) spaced screens, the inner of which, Ll-, is mounted between slides 47. A pipe 4S leads from the lower tubular extension near thai-outside of the lamp and has its free end passed inwardly through the wall of the upper lamp section immediately below the bottom thereof. An apertured plate 48 is seated in spaced relation below the bottom iof the upper 0section to act as a retaining meinber for a packing of mineral wool, and this plate is held in its spaced relation by inwardly directed lugs 418.

A burner is positioned in the outer end of each of the tubular extensions of the casing 45, and the upper burner is normally closed and protected by'a cap 45 which is held in either operative or inoperative position by a spring 46 engaging about its shank and mounted in a housing. The front portion of the wall of the upper body section is provided adjacent the top thereof with a U- shaped bracket 49 adapted to dctachably en.e

gage the downwardly d acted terminal of` an arm 50 carried by a reliector 5l, the

lower edge portion of which is bifurcated as at 52 to straddle the burner, tubes, and the upper portion of which is curved upwardly and forwardly to east the light. from theA burners downwardly in advanceof a miner wearing the lamp upon his cap. The lower portion of the lower body member is fluted or otherwise provided with ribs 50 in order that it may be readily grasped and turned to disconnect it from the upper body member.

As a means for attaching the above lamp to a ininers cap, I have provided the upper body portion at a point opposite the burnf ers with a rearwardly and downwardly directed hook 53, while plates or bracket arms 54 are secured to the flange portion le of the upper'body section havin their intermediate portions secured to eac as shown at 55 to .extend radially from the dange la and having their end portions oppositely directed at right 'angles to the immediate portion, as'shown at 56. The miners cap, which is conventionally shown at 57, ear. ries upon its top and front a plate 58 of Imetal or other suitable material provided with intersecting'grooves or channels 59 in vits up er face and having an opening 60 forme at lthe intersection of these grooves and registering with an opening 6l formed in the top of the cap. The plate is lprovided in front with aplate 62 having upwardly directly spaced spring armsfor cli S63 adapted to receive the oppositely directe terminals 56 vof the lamp brackets when the downwardly directed termina-l of the hook 53 is passed through the openings 60 and 6l. The manner of attaching the lamp to the cap will be ltering material held in place betweenV readilyunderstood'from this description,par-

'understood and but slight description of the l same is necessary. It must be borne in mind f that because of explosive gases commonly met with 1n mines, any free ame unprotected by a gauze housing is a gr`eat source of danger and for this reason if any candle or lamp worn by a miner goes out it is practically impossible for him to light it without, leaving the mine. Furthermore, "it is fre` quently dangerous for any miner. to move about in a mine without a light. It is for this A' reason that I have provided the lamp with two entirely separate and independent gas generating chambers and water reservoirs and with two burners, so arranged that either one maybe lighted lfrom the other. The chambers are filled with carbid and both water reservoirs with water. The valve 39 controlling the supply of water to the supplemental generating chambers is closed, however, while thevalve 23 is opened to permit the feeding of water to the main carbid chamber. Gas therefore is generated only in the main carbid chamber and the lower burner is the oly burner normally used. If at any time t e light given by the lamp grows dim, either through exhaustion of the carbid or the complete use of the water in the main generator, the miner, being warned by the feebleness of the light, immediately opens the valve of the supplemental genera-- tor, removes the cap 45 and as soon as gas is generated in said generator it passes tothe upper burner which is immediately ignited 'from the lower burner. This-supplemental generator contains sufficient water and carbid to maintain the necessary light while the miner reaches a pointwhere he can safely recharge and reli ht Lthe lamp.

It will of course be. un erstood that when the lamp is used in mines Containing explosive gases the lamps Will be protected by some suitable screen of foraminous material but as such a screen does not form any part of the present invention it has been omitted from the drawingsto permit the more clear showing of the actual 4 structure of the burner tubes.

I do not wish in any way to limit myself to the `specific details of construction illustrated in the drawings and described in the above speciiication, as various minor changes within the scope of the appended claims may at any time be made without in the slightest degree departing from the spirit of my invention. l 1

What I claim is:

the outer end of said casing being divided 1. A miners acetylene lamp including a body having upper and lower sections, the lower section forming a main generating chamber and the upper section forming amain water reservoir for the said generatingl ya chamber and a lsupplemental generating. chamber, a, waterreservoir detachably carried by the upper section and adapted to furnish water to the supplemental gener'-, ating. "chamber,- a burner. carried by Athe upper section and .in communication-With the main generating chamber, and al1-adjacentburner in communication with the sup? plemental generating elia-rubor@- 2. A miners acet Iene lamp including 'a lower body member open at its ,upper-enst an upper body member closed at both ends' and adapted for attachment to. the lower body member, a partition wallv dividing the upper body member into compartments, a manually operable valve arranged to provide communication between o ne of-:said com partments and the' lower body member, f a

reservoir adapted -for detachable engagef ment with the upper body member-'and lforming a closure for the other compartment, a' manually operable valve providing communication between said reservoir and its compartment, and burners carried by the upper body member and in communicalower body member respectively.

3.` A miners acetylene lamp includingl lower body member, an upper body-member detachably secured to the lower body member and having a bottom forming a v lclosure for the lower body member,fa partition wall in the upper body member divid- 'ing the sameinto a water reservoir and a generating chamber, a valve controlling the flow of Water from the reservoir to ,the lower. body member, a water reservoir forming a closure for the generating chamber in the upper body member, a valve controlling the flow of water from said latter reservoir to the generating chamber of the upper body member, burners carried by the upper body member, communicatmg means between one of Sad burners and lthe generating chamflixt ber of the upper body member, and'co'mmufl nicating means between the other of said bur-ners and the generating chamber of the lower body member, 4 A. An acetylene lamp including a casing providing carbid chambers and'water chamber's, means for supplyingwater'from the `water 'chambers to the carbid chambers,4 a

tubular casing open at its ends leadingL from one of the carbid chambers, ,a portion of of@ by a partition, tubularvconnection between said divided-oil1 portion and .the otherl carbid chamber, and burners fitted in the open outer ends othetubular casing and its divided chamber, y 1

tion with said latter compartment'andtbe- An acetylene lamp including` a casing" provided with a plurality of Water Chambers'and a plurality of carbid chambers, a plurality of burners arranged one immediately below the othenineans for supplying gas from each generating chamber to one of the burners, and means for normally covering the discharge end of one of the burners.

6. An acetylene lamp including a Casing provided With a plurality of Water chainbers and a plurality of carbid chambers, a plurality vont burners arranged one imniediatel7 below the other, means for supplying gas from each generating chamber to one of .the burners, and means for normally coVering' the discharge end of one of the burners, said means including a capmountecl for reeiprocatory and rotary movement, and a spring' adapted to'liold the cap in adjusted position. i

.n testimony whereof I atliX my signature in presence of two Witnesses.

B. W. ELKINS. F. K. BOYD. 

